<!DOCTYPE html>
<html lang="en" class="dark">
  <head>
    <meta charset="UTF-8" />
    <link rel="icon" href="/avatar.ico" />
    <meta name="google" content="notranslate" />
    <meta name="referrer" content="no-referrer" />
    <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />

    <title>Zhangteng-Workbench</title>
    <style>
      /* .c {
        background: radial-gradient(black 15%, transparent 16%) 0 0, radial-gradient(black 15%, transparent 16%) 8px 8px,
          radial-gradient(rgb(255 255 255 / 10%) 15%, transparent 20%) 0 1px,
          radial-gradient(rgb(255 255 255 / 10%) 15%, transparent 20%) 8px 9px;
        background-color: #282828;
        background-size: 16px 16px;
      } */
      body {
        overflow: hidden;
        background: #060e1b;
      }

      canvas {
        position: absolute;
        top: 0;
        left: 0;
        z-index: -1;
        width: 100%;
        height: 100%;
        opacity: 0.5;
      }

      .codrops-demos {
        position: absolute;
        z-index: 99;
        width: 96%;
        font-size: 0.8em;
        text-align: center;
      }

      .codrops-demos a {
        display: inline-block;
        padding: 0.5em 1.2em;
        margin: 0.35em 0.1em;
        font-size: 110%;
        font-weight: 700;
        color: #fff;
        text-decoration: none;
        text-transform: uppercase;
        letter-spacing: 1px;
        border: 2px solid transparent;
        border-radius: 2px;
        outline: none;
      }

      .codrops-demos a:hover,
      .codrops-demos a.current-demo {
        border-color: #383a3c;
      }
    </style>
  </head>
  <body class="c">
    <canvas id="canvas"></canvas>
    <div id="app"></div>
    <script>
      'use strict';
      var canvas = document.getElementById('canvas'),
        ctx = canvas.getContext('2d'),
        w = (canvas.width = window.innerWidth),
        h = (canvas.height = window.innerHeight),
        hue = 217,
        stars = [],
        count = 0,
        maxStars = 2500;

      var canvas2 = document.createElement('canvas'),
        ctx2 = canvas2.getContext('2d');
      canvas2.width = 100;
      canvas2.height = 100;
      var half = canvas2.width / 2,
        gradient2 = ctx2.createRadialGradient(half, half, 0, half, half, half);
      gradient2.addColorStop(0.025, '#fff');
      gradient2.addColorStop(0.1, 'hsl(' + hue + ', 61%, 33%)');
      gradient2.addColorStop(0.25, 'hsl(' + hue + ', 64%, 6%)');
      gradient2.addColorStop(1, 'transparent');

      ctx2.fillStyle = gradient2;
      ctx2.beginPath();
      ctx2.arc(half, half, half, 0, Math.PI * 2);
      ctx2.fill();

      // End cache

      function random(min, max) {
        if (arguments.length < 2) {
          max = min;
          min = 0;
        }

        if (min > max) {
          var hold = max;
          max = min;
          min = hold;
        }

        return Math.floor(Math.random() * (max - min + 1)) + min;
      }

      function maxOrbit(x, y) {
        var max = Math.max(x, y),
          diameter = Math.round(Math.sqrt(max * max + max * max));
        return diameter / 2;
      }

      var Star = function () {
        this.orbitRadius = random(maxOrbit(w, h));
        this.radius = random(60, this.orbitRadius) / 12;
        this.orbitX = w / 2;
        this.orbitY = h / 2;
        this.timePassed = random(0, maxStars);
        this.speed = random(this.orbitRadius) / 900000;
        this.alpha = random(2, 10) / 10;

        count++;
        stars[count] = this;
      };

      Star.prototype.draw = function () {
        var x = Math.sin(this.timePassed) * this.orbitRadius + this.orbitX,
          y = Math.cos(this.timePassed) * this.orbitRadius + this.orbitY,
          twinkle = random(10);

        if (twinkle === 1 && this.alpha > 0) {
          this.alpha -= 0.05;
        } else if (twinkle === 2 && this.alpha < 1) {
          this.alpha += 0.05;
        }

        ctx.globalAlpha = this.alpha;
        ctx.drawImage(canvas2, x - this.radius / 2, y - this.radius / 2, this.radius, this.radius);
        this.timePassed += this.speed;
      };

      for (var i = 0; i < maxStars; i++) {
        new Star();
      }

      function animation() {
        ctx.globalCompositeOperation = 'source-over';
        ctx.globalAlpha = 0.8;
        ctx.fillStyle = 'hsla(' + hue + ', 64%, 6%, 1)';
        ctx.fillRect(0, 0, w, h);

        ctx.globalCompositeOperation = 'lighter';
        for (var i = 1, l = stars.length; i < l; i++) {
          stars[i].draw();
        }

        window.requestAnimationFrame(animation);
      }

      animation();
    </script>
    <script type="module" src="/src/main.js"></script>
    <script>
      function copyCode(c) {
        // 查找指定ID的元素
        const element = document.getElementById(c);
        console.log('element', element);
        // 创建一个临时的textarea元素
        const textarea = document.createElement('textarea');
        textarea.value = element.value;

        // 将textarea元素添加到文档中
        document.body.appendChild(textarea);

        // 选中textarea中的内容
        textarea.select();

        // 复制选中的内容到剪贴板
        document.execCommand('copy');

        // 移除临时的textarea元素
        document.body.removeChild(textarea);

        console.log('Code copied!');
      }
    </script>
  </body>
</html>

